15. MIXTURE OF INCH AND METRIC FASTENERS:
The use of world-wide sources for components has made it possible for Foundation Equipment Corporation
(FEC) products to have a mixture of inch and metric fasteners. For example, metric fasteners may be used on
the fuel pump, guides, etc., and other components. It is possible that the internal bolts on a component may be
metric while the mounting bolts may be inch size.
To help mechanics know when metric fasteners are used on a product, future service publications such as parts
books, Operation and Maintenance Manuals will use a notice similar to the one that follows.
Avoid mixing metric and inch (customary) fasteners. Mismatched or incorrect fasteners can result in
equipment damage or malfunction, or possible personal injury. Original fasteners removed from the
vehicle should be saved for assembly when possible. If new ones are required, caution must be taken to
replace with one that is of the same part number and grade or better.